The classic oral glucose tolerance test measures blood glucose levels five times over a period of three hours. Some physicians simply get a baseline blood sample followed by a sample two hours after drinking the glucose solution. In a person without diabetes, the glucose levels rise and then fall quickly. In someone with diabetes, glucose levels rise higher than normal and fail to come back down as fast.
Efforts to cure or stop type 1 diabetes are still in the early stages, and these approaches will also not be suitable for people that have already lost their insulin-producing cells. A solution could be the creation of an “artificial pancreas” — a fully automated system that can measure glucose levels and inject the right amount of insulin into the bloodstream, just like a healthy pancreas would.
Abnormal cholesterol and triglyceride levels. If you have low levels of high-density lipoprotein (HDL), or "good," cholesterol, your risk of type 2 diabetes is higher. Triglycerides are another type of fat carried in the blood. People with high levels of triglycerides have an increased risk of type 2 diabetes. Your doctor can let you know what your cholesterol and triglyceride levels are.